Nitecore EA81 User Manual

User Manual

Features

· Utilizes a CREE XHP50 LED

· Maximum output up to 2150 lumens

· High efficiency circuit board provides up to 810 hours runtime

· Boasts a peak beam intensity of 53,300cd and a throw distance up to 462
meters

· Five brightness levels and three special modes to select from

· A micro-textured reflector offers wide angle lighting

· Featuring Advanced Temperature Regulation (ATR) technology to
dynamically adjust output performance according to its internal temperature

· Direct access to ultralow and turbo modes

· Innovative dual switch offers user-friendly interface

· Integrated power indicator light displays remaining battery power ( Chinese
Patent:ZL201220057767.4)

· Reverse polarity protection prevents damage from incorrectly inserted
batteries

· Stainless steel retaining ring protects core components from damage

· Toughened ultra-clear mineral glass with anti-reflective coating

· Constructed from aerospace grade aluminum alloy

· Robust HAIII military grade hard-anodized

· Waterproof in accordance with IPX-8 (two-meter submersible)

· 1.5 meters impact resistance

· Tail stand capability

Dimensions

Length: 193mm (7.6”)
Head diameter: 60mm (2.36”)
Tube diameter: 41.8mm (1.65”)
Weight: 282g (9.95oz)(without battery)

Operation Instructions

Battery Installation

1. Insert batteries with the positive (+) and negative (-) ends
corresponding to the diagram on the inside of the battery
compartment.

2. Tighten the tailcap by aligning the two gold pins on the inside of the
tailcap with the corresponding holes on the flashlight bottom and
rotating clockwise.

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Output & Runtime

®

The All-Round Flashlight Expert

TURBO HIGH MID LOW

LUMENS

1200

LUMENS

2150

LUMENS

460

LUMENS

80

1

h45min2h30min

ULTRALOW

LUMEN

1

810

h

32

h

7

h

462m

(Beam Distance)

53300cd

(Peak Beam Intensity)

IPX-8, 2m

(Waterproof and Submersible)

1.5m

(Impact Resistant)

Tips

Inserting batteries in a dark environment: Two of the four battery slots in
the EA81’s battery compartment feature grooves indicating that batteries
should be inserted with the negative (-) ends facing forward, while the two
slots with no grooves require the batteries to be inserted with the positive
(+) ends facing forward. In this way, batteries can be inserted correctly
through tactile feedback alone.

Upon loading the batteries, the power indicator light will blink to indicate
the battery power. Please refer to the “Power Tips” section of this manual
for details.

WARNING

1. Do not mix rechargeable with non-rechargeable batteries.

2. Do not mix batteries of different types/brands.

On/Off Operation

To turn on: press the on/off switch to turn the light on
To turn off: press the on/off switch again to turn the light off

Standby Mode

With the light turned on, press and hold the on/off switch for more than
one second to turn off the light and activate location beacon function. The
blue power indicator will flash once every three seconds to indicate the
location of the EA81. In this mode, the EA81 can keep running on 8 × AA
batteries for 1 year.

NOTE: With the power indicator off in standby mode, the EA81 can stay
in standby mode for 2 years with 8 × AA batteries.

Brightness Levels

With the light turned on, press the mode switch to cycle through
brightness levels of ultralow, low, medium, high and turbo. The EA81 has
memory effect. When it is switched on, the EA81 will enter the brightness

EA81

TYPE

Nominal voltage

Compatible

Primary AA battery

AA 1.5V

Y (Recommended)

Rechargeable AA battery

AA 1.2V

Y (Recommended)

Primary AA Lithium battery

L91 1.5V

Y

Primary LiFePO4 battery

14500 3.2V

Rechargeable Li-ion battery

14500 3.7V

N (Banned)

N (Banned)

NOTICE

The above data has been measured in accordance with the international
flashlight testing standards ANSI/NEMA FL1 using 8 x 1.2V 2450mAh AA
batteries under laboratory conditions. The data may vary slightly during
real-world use due to battery type, individual usage habits and
environmental factors.

Accessories

Quality holster, lanyard,
spare O-ring

Battery Options

SYSMAX Industry Co., Ltd.

TEL: [phone]
FAX: [phone]
E-mail: [e-mail]
Web: www.nitecore.com
Address： Rm1401-03, Glorious Tower, 850 East Dongfeng

Road, Guangzhou, China 510600

ATR Technology

Advanced temperature regulation (ATR) technology allows EA81 to
dynamically adjust output performance based on its internal temperature.
This prevents damage from overheating and prolongs its working life.

Changing Batteries

Batteries should be replaced when any of the following occurs: The
output appears to be dim or the flashlight becomes unresponsive.

Maintenance

Every 6 months, threads should be wiped with a clean cloth followed by
a thin coating of silicon-based lubricant.

Warranty Service

All NITECORE® products are warranted for quality. Any defective /
malfunction NITECORE® product can be repaired free of charge for a
period of 60 months (5 years) from the date of purchase. Beyond 60
months (5 years), a limited warranty applies, covering the cost of labor
and maintenance, but not the cost of accessories or replacement parts.
The warranty is nullified in all of the following situations:

1. The product(s) is/are broken down, reconstructed and/or modified by

unauthorized parties.

2. The product(s) is/are damaged through improper use.

3. The product(s) is/are damaged by leakage of batteries.

For the latest information on NITECORE® products and services, please
contact a local NITECORE® distributor or send an email to
[e-mail]

※All images, text and statements specified herein this user manual are
for reference purpose only. Should any discrepancy occurs between this
manual and information specified on www.nitecore.com, information on
our official website shall prevail. Sysmax Industry Co., Ltd. reserves the
rights to interpret and amend the content of this document at any time
without prior notice.

level last used.

Instant Ultralow/Turbo

Instant ultra-low: with the light turned off, press the on/off switch for
more than one second to ultralow (1 lumen);
Instant turbo: with the light turned off, press the mode switch for more
than one sencond to enter turbo (2150 lumens).

Special Modes (Strobe/Location/SOS)

With the light turned on, press the mode switch for more than one
second to enter strobe mode. To cycle through all three modes of Strobe /
Location / SOS, simply press the mode switch for more than one
second again. To exit special modes, simply press the on/off switch .

Strobe ready

With the light turned off, press the mode switch twice in quick
succession to enter strobe mode instantly. To exit, simply press any
button and the light will be turned off.

Lockout/Unlock

With the light turned on, press and hold both switches for more than one
second until the flashlight is switched off and enters lockout mode. In this
mode, the EA81 can continue working on 8 × AA batteries for over 2
years.
Lockout mode prevents accidental activation of the flashlight. To exit
lockout mode, simply press and hold both switches for more than one
second again.

NOTE:

When the EA81 is kept in a backpack or left unused for extended periods,
Nitecore recommends removing the batteries to cut off power, thus
preventing parasitic battery drain or accidental activation of the flashlight.

Power Tips

Each time batteries are inserted, or the mode switch is pressed with
EA81 turned off, the blue LEDs will blink to indicate battery levels：

1. Three times for battery levels over 50%;

2. Twice for battery levels below 50%;

3. Once for battery levels close to depletion (below 10%).

Thanks for purchasing NITECORE!

®

The All-Round Flashlight Expert

20150916

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